STANDLEY TREES AND SHRUBS OF MEXICO 1557 



4. Flourensia ilicifolia T. S. Brandeg. Zoe 5: 238. 1906. 

 Known only from the type locality, Sierra de Parras, Coahuila. 



Shrub, much branched; leaf blades rhombic-ovate, 1.6 to 2.4 cm. long, coarsely 

 dentate; heads 1.3 to 1.6 cm. high. 



5. Flourensia glutinosa (Robins. & Greenm.) Blake, Proc. Amer. Acad. 49: 



374. 1913. 



Encelia glutinosa Robins. & Greenm. Amer. Journ. Sci. III. 50: 155. 1895. 



Puebla and Oaxaca; type from Las Hoyas Canyon, Oaxaca. 



Shrub 3 to 5 meters high; leaf blades ovate to ovate-lanceolate, 6.5 to 9 cm. 

 long, entire; heads about 2.5 cm. wide. 



It is perhaps this plant for which Dr. Reko reports the name of "rafz del 

 manso." 



6. Flourensia coUodes (Greenm.) Blake, Proc. Amer. Acad. 49: 373. 1913. 

 Encelia collodes Greenm. Proc. Amer. Acad. 39: 110. 1903. 



Known only from the type locality, between Ocuilapa and Tuxtla, Chiapas. 

 Shrub; leaves entire; heads 4 to 5 toward tips of branches, 4 cm. wide. 



7. Flourensia pringlei (A. Gray) Blake, Proc. Amer. Acad. 49: 375. 1913. 

 Helianthella -pringlei A. Gray, Proc. Amer. Acad. 21: 389. 1886. 



Encelia oblonga Robins. & Fern. Proc. Amer. Acad. 30: 118. 1894. 



Chihuahua and Durango; type from Chihuahua City. 



Stems numerous, suffrutescent, 30 to 40 cm. high, very leafy; leaf blades elliptic- 

 oblong to oblong-lanceolate, 3.2 to 10 cm. long; heads solitary, terminal, long- 

 peduncled, 2.5 to 4 cm. wide. 



8. Flourensia resinosa (T. S. Brandeg.) Blake, Proc. Amer. Acad. 49: 375. 



1913. 

 Encelia resinosa T. S. Brandeg. Zoe 5: 240. 1906. 

 Known only from the type locality, Ixmiquilpan, Hidalgo. 

 Shrub, very glutinous; heads 1 to 4, long-peduncled, 3.5 to 5.3 cm. wide. 



9. Flourensia microphylla (A. Gray) Blake, Proc. Amer. Acad. 49: 374. 1913. 

 Encelia microphylla A. Gray, Proc. Amer. Acad. 15: 37. 1879. 



Coahuila; type from Saltillo. 



Much-branched shrub about 1 meter high; heads solitary, long-peduncled, 

 about 2.5 cm. wide. 



66. SALMEA DC. Cat. Hort. Monsp. 140. 1813. 



Reference: Blake, A revision of Salmea and some allied genera, Journ. Bot. 

 Brit. & For. 53: 193-201. 1915. 



Shrubs, often scandent; leaves opposite; heads small, whitish, discoid, cymose- 

 panicled; involucre about 3-seriate, graduate; receptacle conic; achenes strongly 

 compressed, ciliate; pappus of 2 awns. 



Heads very numerous, cymose-panicled on widely spreading, axillary and ter- 

 minal branches 1. S. scandens. 



Heads few to numerous, on erect peduncles or several-headed flowering-branches. 



Heads numerous, on 3 to 11-headed peduncles 2. S. palmeri. 



Heads few (5 to 11), on 1 to 3-headed peduncles 3. S. oligocephala. 



1. Salmea scandens (L.) DC. Cat. Hort. Monsp. 141 1813. 



Bidens scandens L. Sp. PI. 833. 1753. 



Salmea eupatoria DC. Cat. Hort. Monsp. 141. 1813. 



Spilanthes nitidus Llave in Llave & Lex. Nov. Veg. Descr. 1 : 28. 1824. 



Salmea grandiceps Cass. Diet. Sci. Nat. 47: 88. 1827. 



Salmea parviceps Cass. Diet. Sci. Nat. 47: 88. 1827. 



Salmea oppositiceps Cass. Diet. Sci. Nat. 47: 89. 1827. 



